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Shape-Tunable BaTiO3 Crystals Presenting Facet-Dependent Optical and Piezoelectric Properties.
Chen, Jing-Wei; Pal, Arnab; Chen, Bo-Hao; Kumar, Gautam; Chatterjee, Subhodeep; Peringeth, Kiran; Lin, Zong-Hong; Huang, Michael H.
Afiliación
  • Chen JW; Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Pal A; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Chen BH; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Kumar G; International Intercollegiate PhD Program, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Chatterjee S; Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Peringeth K; Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 300044, Taiwan.
  • Lin ZH; National Synchrotron Radiation Research Center, Hsinchu, 300092, Taiwan.
  • Huang MH; Department of Chemistry, National Tsing Hua University, Hsinchu, 300044, Taiwan.
Small ; 19(9): e2205920, 2023 Mar.
Article en En | MEDLINE | ID: mdl-36521932
BaTiO3 octahedra, edge-, and corner-truncated cubes, and cubes with four tunable sizes from 132 to 438 nm are synthesized by a solvothermal growth approach. Acetic acid treatment can cleanly remove BaCO3 impurity. Rietveld refinement of X-ray diffraction patterns and Raman spectra help to confirm the particles have a tetragonal crystal structure. The crystals also exhibit size- and facet-dependent bandgap shifts. BaTiO3 octahedra show larger piezoelectric, ferroelectric, and pyroelectric effects than truncated cubes and cubes. The measured dielectric constant differences should be associated with their various facet-dependent behaviors. Piezoelectric nanogenerators fabricated from BaTiO3 octahedra consistently show the best performance than those containing truncated cubes and cubes. In particular, a nanogenerator with 30 wt.%-incorporated octahedra displays an open-circuit voltage of 23 V and short-circuit current of 324 nA. The device performance is also highly stable. The maximum output power reaches 3.9 µW at 60 MΩ. The fabricated nanogenerator can provide sufficient electricity to power light-emitting diodes. This work further demonstrates that various physical properties of semiconductor crystals show surface dependence.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania
Texto completo
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Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Small Asunto de la revista: ENGENHARIA BIOMEDICA Año: 2023 Tipo del documento: Article País de afiliación: Taiwán Pais de publicación: Alemania